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怎样区分螃蟹种类
更新时间: 2020-10-05 00:00:00  

区分螃蟹种类的方法有以下几种:

海蟹:腿边为黄色,有细小绒毛;河蟹:腿有细毛,背部为黑色,体型较小;石蟹:身体显红色,居住在石头缝里;大闸蟹:有螯足,雄此雌大,掌节与指节基部的内外面密生绒毛;青蟹:甲壳呈椭圆形,体扁平、无毛,头胸部发达,双螯强有力,后足,形如棹。

关键词: 怎样 区分 螃蟹 种类

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